Roll-feed mechanism for power presses



Jan. 1!

H. bsswALn ROLL D MECHANISM FOR POWER PRESSES Filed Jan. 26. 1922 Patented Jan. 1, 1924.

UNITED STATES HERMAN OSSWALD, OF GLENDALE, NEW YORK.

ROLL-FEED MECHANISM FOR POWER PRESSES.

Application filed January 2c, 1922. Serial in. 531,929.

To all whom it may concern:

Be it known that I, HERMAN OSSWALD, a citizen of the United States, and resident of Glendale, in the county of Queens and State of New York, have invented a new and useful Improvement in Roll-Feed Mechanism for Power Presses, of which the following is a specification.

My invention consists in a friction roll feed mechanism especially adapted for at tachment to power presses, whereby intermittent rotary movement of the feed rolls is accomplished.

The object of my invention is to provide a friction clutch located between the rotary feed roll member and its oscillating driving member, which clutch will impart an intermittent rotar movement to the feed roll without liabi ity of slipping, said clutch being quiet, powerful and positive in its action and quickly and readily reversible for driving the feed rolls in either direction.

A further object is to provide certain improvements in the construction, form and arran ement of the several parts whereby the o ject above set forth may be accomplished.

A practical embodiment of my invention is represented in the accompanying drawin s, in which ig. 1 represents in front elevation a portion of a roll feed for power presses, with my friction roll feed mechanism applied thereto.

Fig. 2 represents a side view of the same.

Fig. 3 represents a section taken in the plane of the line IIIIII of Fig. 1.

Fig. 4 represents a similar section with the parts in the position they assume when clutched in one direction. 7

Fig. 5 represents a similar view with the parts in the position they assume when clutched in the o osite direction.

The upper aINF lOWGI feed rolls for the material are denoted by 1 and 2 and they are suitably mounted in the usual manner. The lower feed roll shaft 3 has fixed thereto the driven member 4 of the clutch, which member is provided with a flange having a circular inner wall 5 spaced from and concentric with the axis of the feed roll shaft 3. The hub 6 of the oscillating operatin lever 7, which forms the drivin mem er, is loosely mounted upon the fee roll shaft 3, which lever is provided with a disc portion 8 covering the open side of the driven memsaid adjacent ends of the split ring. With" the parts in their normal position as shown in Figs. 1, 2 and 3, the clutch is released.

The disc portion 8 of the oscillating operating lever which forms the driving member of the clutch is provided with two pe-" ripheral recesses 16, 17, exposing portions of the split clutch ring 12. In these ex osed ortions of the clutch ring I provide oles or the reception of a screw or pin 18 which serves as a removable stop to coact with the wall of either one of the recesses in the disc portion 8 of the operatin lever, to act as a lost motion connection et ween the split ring and driving member, and to insure the proper positioning of the split ring on each return stroke of the drivin member. When this stop 18 is in the position shown in Fig. 2, the parts are adjusted for driving the feed rolls intermittently in one direction and when this stop is in the other position in the recess 16, the parts are adjusted for the intermittent movement of the feed rolls in the opposite direction.

The lever 7 may be oscillated by any suitable means, not shown herein, through the connecting rod 19.

The operation of the friction roll feed mechanism is as follows V Presupposing the parts to be in the positions shown in Figs. 1,2 and 3; as the opcrating lever 7 is started on its upward movement, the inclined surface 11 of the double cam 9 will force the roller 15 outwardly, thereby expanding the split ring 12 into frictional engagement with the circular inner wall 5 of the driven member 4. The lost motion connection between the lever 7 and the split ring 12, through the stop 18, serves to keep the adjacent ends of the split ring properly positioned with respect to the cam at all times.

If it be desired to reverse the intermittent rotary movement of the feed rolls, the stop 18 is removed from its position shoygg i gig 2, igciithin the lite its position shown in otted linesu n the recess 16. The downward movement of the operating lever 7 from the position shown in Fig. 2 will cause the inclined portion 10 to force the clutch roller outwardly to expand the ring 12 intgfriqtional engagement with the circular inner wall 5 of the feed o l mm. e

10 From! e aboyze description itcwill be seen that I have provided a friction clutch device for imparting a predetermined interi'nittent rotary II lOVQIQQl'lt tQ the feed rolls in either direction, which device has a very extended 15 grippingsurfacajthus rendering it powerful m1, its action and prevent ng any liability of slippage, the device at the same time being noiseless.

It is evident that various changes may be 20, made in the construction, form and arrangemer t of the several parts without departing fr the spirit and. scope of my invention, hence, I do not wish to be limited to the particular, embodiment hereinshown and dea]; I claim is 1. A roll feed mechanism comprising driving and driven'members,a friction clutch for con yenting the oscillating movement of the driving member into an intermittent rotary movementofthe drivenmember, said clutch com rising a cai n carried by the driving mem er, a normally contracted split ring, a rollerlocatedbctween the face of the cam 3.5 and the e nds of the split ring. whereby the moyement of the cam awav from its normal position cause the, roller. to expand the pl tg g ag nt lut hing ngageme t. h the driveii member, and a, lost motion con- 40 nebtiqn, between the split ring and driving member.

2. Arolhfeed mechanism comprising driving and driven members, a friction clutch for, converting the oscillating; movement of the driving member intoan intermittent rotary movement of the driven member, said elntch comprisi a double cam carried by the driving mem er, normally contracted split ring, a roller located between the cam and the ends of the split ring, whereby the movement of the cam away from its normal position in either direction will cause the roller to expand the split ring into frict-ional engagement with .tgieg drigen member, and a reversible lost motion connection between the split ring and driving member.

3. A feed roll, i-ts'shaft, a driving member loosely mounted thereon, a driven member fast on said shaft. a friction clutch for con verting the oscillating n'loven'ient of the driving member into an intermittent rotary movement of the driven member, said clutch including a flange on the driven men'iber having a circular inner wall, a normally contracted split ring located in proximity to said wall, a cam carried by the driving member, and a roller interposed between the cam and the ends of the split ring, whereby the movement of the cam away from its normal position will cause the roller to expand the split ring into frictional engagement with the adjacent wall of the driven member, said driving member being provided with a disc portion having a peripheral recess and said spiit ring beingprovided with a stop 7 located in said recess forming a lost motion connection between the ring and driving member.

4. A feed roll, its shaft, a driving member loosely mounted thereon, a driven memso her fast on said shaft, a friction clutch for converting the oscillating movement of the driving member into an intermittent rotary movement of the driven member, said clutch including a flange on the driven member 35 having a circular inner wall, a normallycontracted split ring located in proximity to said wall, a double cam carried by the driving member, and a roiler interposed between the cam and the ends of the split ring, whereby the movement of the cam away from its normal position in either direction will cause the roller to expand the split ring into frictional engagement with the circular wall of the driven member, said driving member being provided with a disc portion having :two peripheral recesses and said split ring having a removable stop arranged to be located in one or the other of said recesses to form a lost motion connection between the ring 0 and driving member.

In testimony, that I claim the foregoing as my invention, 1 have signed my name this 20th day of January, 1922.

HERMAN OSSWALD. 

